The Incan social and economic system described is called Mit’a.
Mit’a referred to a form of tribute to the Inca government in the form of labor. It was an Incan social and economic system which was significant to the Incan Empire as it allowed the state to control their subjects. According to the Mit’a rule, all male individuals including adolescent aged 15-20 were required to work certain number of days each year on a revolving basis to work on construction projects, mining, and the maintenance of buildings and roads and military service was also mandatory. Mit’a was a primary reason the empire was able to have so many useful agricultural and construction projects that enhanced the quality and convenience of life within the empire. The empire estimated that an individual requires 65 days in a year to work for their family and remaining days were devoted to working as directed by the empire.
Well a levee are things like dams and so it would help settlement if they were to start running out of water they could build a levee and run the water to where ever they needed it.
